Nitrosend vs Clevenio.

TL;DR

Clevenio is a B2B data platform for the Nordics and the EU. It maps companies and decision-makers in Finland, Sweden, Norway, and Denmark from official business registers, pushes that data into HubSpot, Pipedrive, or Salesforce, keeps it current, and runs multichannel sequences on top of it. If registry-grade coverage of a Nordic market is why you bought it, Nitrosend doesn't replace that, and this page won't pretend otherwise.

Nitrosend specializes in email. Where the two products meet is the email step of that sequence, and that's the half worth moving: every capability is an API endpoint and an MCP tool before it's a screen, contacts are unlimited on every plan including Free, and there's a published price at every rung. Clevenio ships a real MCP server of its own. The difference is what each one reaches.

1. Add and verify your sending domain in Nitrosend. DKIM and SPF records sit alongside whatever your reps send through today, so both paths can send from the same domain for as long as the overlap lasts.
2. Pull the companies and contacts you've built. Clevenio's REST API carries bulk export and an enrichment endpoint, so this isn't a manual job. Import them with nitro_import_contacts, and registry firmographics like business ID, revenue band, employee band, and industry code land as custom fields.
3. Decide whether the data layer stays. If Nordic registry coverage is why you bought Clevenio, keep it and let it keep syncing into HubSpot, Pipedrive, or Salesforce. This is the step where most teams stop switching and start splitting.
4. Rebuild sequences as flows with nitro_compose_flow. The triggers have equivalents on both sides, and reply detection that pauses a sequence maps onto a flow branch.
5. Decide what carries your reputation. BYO sending keys on Pro and above route mail through Amazon SES, Resend, Postmark, Mailgun, or SendGrid, on the domain you already warmed. There's no sending pool to carry across, which is what makes the split clean rather than transitional.

• Nitrosend is the sending platform: campaigns, flows, templates, segments, and transactional email on one product, with no separate bill for the transactional half.
• Unlimited contacts on every plan, including Free, so a list that grows without being mailed never moves the bill.
• A published price from 500,000 to over 4,000,000 emails a month, where a ladder usually turns into a booked meeting.
• Free to start with the full MCP, API, and CLI, so an agent can drive the platform before anyone talks to sales.
• MCP-first is an architecture, not an integration: every capability is an API endpoint and an MCP tool before it's a screen.
• Clevenio's agent surface is built for retrieval, which is a different job from operating the program that follows it.
• Ours reaches the program: compose a flow, send a message, import contacts, replace a template, run a test.
• Deliverability, billing, tests, and approvals are tools here, and they're the four that usually stop an automation dead.

Which layer is actually your bottleneck

Outbound has two layers. One is knowing who to contact: which companies exist in your market, who decides inside them, and whether the record is current enough to act on. The other is reaching those people well: authentication that holds up, a template that renders, a flow that fires on the right trigger, and a send that lands where it was aimed. Almost nobody buys both halves from one vendor, and the two are priced on units that have nothing to do with each other.

Teams weighing Clevenio against Nitrosend are usually stuck on one layer and paying for both. If your reps can already name fifty accounts they want, and the problem is that the sequence goes out late, gets filtered, or can't be changed without someone opening a dashboard, that's a sending problem, and a better database won't touch it. When they can't name the accounts at all, no amount of sending capacity helps.

If your market is the Nordics, the data layer is the harder half to replace. Registry-sourced coverage of Finland, Sweden, Norway, and Denmark is a genuine asset, and there aren't many places to buy the same thing. In our view, keep it, and move the half an AI-native email platform does better.

What an agent can actually do in each

Both products ship an MCP server, so "does it work with an agent" stopped being the interesting question. What separates them is what those tools reach. Clevenio's tools answer questions about a market: search companies by industry, location, or headcount, look up a contact, check a hiring or funding signal, enrich a domain. That's a research surface, and it's a good one.

Nitrosend's tools operate a program instead. Compose a flow, import contacts, replace a template, send a message, run a test. Every capability is an API endpoint and an MCP tool before it's a screen, which is a different thing from a dashboard that grew an API and then exposed it. Where this runs out: none of those tools can tell you who to contact, so an agent working a cold Nordic market still starts in Clevenio.

The practical test is whether the agent finishes the job. Ask it to build a three-step sequence for last week's hiring signals, then watch how far it gets before someone opens a browser. Against Nitrosend it gets all the way through. In Clevenio it stops at the send and hands back, and that handoff is what a product designed for humans clicking buttons can't design away.

Can Nitrosend replace Clevenio?

For the email half, yes. Campaigns, flows, segments, templates, contacts, and transactional email are all one product here, and transactional isn't a separate bill. What moves is the email step of a Clevenio sequence; the other touchpoints stay where your reps run them. The Nordic company and decision-maker data isn't something Nitrosend does, so a team that bought Clevenio for the database keeps it and splits the stack deliberately.

Does Clevenio send email?

Yes, as steps inside a multichannel sequence, sent from your own domain. Sending isn't what it meters or what it's sold on, which is why the two pricing ladders don't line up: one is priced on emails sent, the other on database coverage and seats.

If the sending moves, what happens to Clevenio's CRM sync?

Nothing changes. The sync writes verified, enriched records into HubSpot, Pipedrive, or Salesforce, and none of that depends on where the mail goes out from. The CRM stays the system of record, and Nitrosend takes its contacts from there with nitro_import_contacts. Most teams end up running both: Clevenio keeps the records current, and the email leaves from Nitrosend.

What does Clevenio cost?

Clevenio doesn't publish a rate. It sells two database subscriptions, a Finnish one and a European one, and both are quote only with a booked meeting as the route in. The bill follows database coverage and seats rather than emails sent, so there's no rung to line up against a send allowance.